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Rinatabart Sesutecan (Rina-S, PRO1184, GEN1184) for Advanced Solid Tumors (GCT1184-01/ PRO1184-001)

Phase 1/2 Study of Rina-S in Patients With Locally Advanced and/or Metastatic Solid Tumors

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05579366
Acronym
RAINFOL-01
Enrollment
764
Registered
2022-10-13
Start date
2022-12-07
Completion date
2027-10-01
Last updated
2026-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

High Grade Epithelial Ovarian Cancer, High Grade Serous Ovarian Cancer, Primary Peritoneal Carcinoma, Fallopian Tube Cancer, Endometrial Cancer, Non-small Cell Lung Cancer, Epidermal Growth Factor Receptor (EGFR)-Mutated Non-Small Cell Lung Cancer (NSCLC), Mesothelioma, Breast Adenocarcinoma, Triple Negative Breast Cancer, Hormone Receptor-positive/Her2 Negative Breast Cancer, Platinum-resistant Ovarian Cancer (PROC), Platinum Sensitive Ovarian Cancer (PSOC), Primary Refractory Ovarian Cancer, Uterine Cancer

Keywords

antibody-drug conjugate, folate receptor alpha, folate receptor, solid tumor, ovarian cancer, primary peritoneal carcinoma, fallopian tube cancer, endometrial cancer, non-small cell lung cancer, mesothelioma, breast cancer, triple negative breast cancer, hormone receptor-positive (HR+)/human epidermal growth factor receptor 2 negative (HER2-) breast cancer, topoisomerase I inhibitor, PROC, epidermal growth factor receptor (EGFR)-mutated NSCLC

Brief summary

This study will test the safety, including side effects, and determine the characteristics of a drug called Rina-S in participants with solid tumors. Participants will have solid tumor cancer that has spread through the body (metastatic) or cannot be removed with surgery (unresectable).

Detailed description

This is a Phase 1/2 study of Rina-S; also known as GEN1184, formerly known as PRO1184, a folate receptor alpha (FRα) targeted antibody-drug conjugate, to evaluate the safety, tolerability, pharmacokinetics (PK), and antitumor activity of Rina-S in participants with selected locally advanced and/or metastatic solid tumors, including epithelial ovarian cancer, endometrial cancer, breast cancer, non-small cell lung cancer, and mesothelioma. The study consists of multiple parts: Part A: monotherapy cohorts Part B: tumor-specific monotherapy dose-expansion cohorts Part C: platinum-resistant ovarian cancer (PROC) monotherapy cohort Part D: combination therapy cohorts Parts F and G: a monotherapy endometrial cancer (EC) cohort Part H: a monotherapy PROC cohort Part I: platinum-sensitive ovarian cancer (PSOC) cohort Part J: a monotherapy PROC cohort Part K: a monotherapy high-grade ovarian cancer cohort Participants will continue to receive study treatment until the first instance of disease progression, unacceptable toxicity, investigator decision, consent withdrawal, study termination by the Sponsor, pregnancy, or death.

Interventions

DRUGRina-S

Intravenous infusion of Rina-S

DRUGCarboplatin

Carboplatin intravenous infusion

DRUGBevacizumab

Bevacizumab intravenous infusion

DRUGPembrolizumab

Pembrolizumab intravenous infusion

Sponsors

Genmab
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Part A and B: * Histologically or cytologically confirmed metastatic or unresectable solid malignancy including ovarian cancer (must have epithelial ovarian cancer, primary peritoneal cancer, or fallopian tube cancer), endometrial cancer, non-small cell lung cancer (Part A), EGFR-mutated NSCLC (Part B), breast cancer (hormone receptor positive, HER2-negative and triple-negative) (Part A), mesothelioma or cervical cancer (Part B). * Previously received therapies known to confer clinical benefit. * Measurable disease per RECIST v1.1 for all tumor types other than pleural mesothelioma which will use mRECIST v1.1 at baseline. Part C and H: Participants must have histologically or cytologically confirmed metastatic or unresectable epithelial ovarian cancer as specified below. * High grade serous ovarian cancer, primary peritoneal cancer, or fallopian tube cancer (excluding endometrioid, clear cell carcinomas, mucinous, low grade, and those with a sarcomatous or neuroendocrine element) * Participants must have received up to 3 prior lines of therapy. Participants may have had up to to 4 prior lines of therapy are allowed if MIRV is locally approved and was used as the last line of therapy. Participants must have progressed radiographically on or after their most recent line of therapy. * Participants must have platinum-resistant ovarian cancer. * Participants must have received prior bevacizumab or approved biosimilar. * Participants with known or suspected deleterious germline or somatic BRCA mutations (as determined by Food and Drug Administration \[FDA\]-approved test in a Clinical Laboratory Improvement Amendments \[CLIA\]-certified laboratory; or locally approved equivalent) and who achieved a complete or partial response to platinum-based chemotherapy must have been treated with a poly ADP-ribose polymerase (PARP) inhibitor as maintenance treatment. * Measurable disease per the RECIST v1.1 at baseline. Part D: Cohort D1: * Participants must have platinum-sensitive ovarian cancer. * Participants must have received 1 to 3 prior lines of therapy. Cohort D2: * Participants must have primary platinum-refractory, platinum-resistant, or platinum-sensitive ovarian cancer. * Participants with primary platinum-refractory ovarian cancer must have received ≤2 prior lines of therapy. Primary platinum-refractory ovarian cancer is defined as a lack of response or by progression within 91 days after completing front-line platinum containing therapy. * Participants must have received 1 to 3 prior lines of therapy for platinum-resistant ovarian cancer (PROC), and up to 4 prior lines of therapy for platinum-sensitive ovarian cancer (PSOC). Prior treatments may have included bevacizumab, PARP inhibitor, and MIRV. * Participants with PSOC must have disease progression on or after maintenance treatment, or at least 6 months (\>183 days) or more from the last dose of platinum-based therapy. Cohort D3 and D4: • Endometrial cancer (any subtype excluding sarcoma). Part F and G: * Participants must have histologically or cytologically confirmed EC. * Recurrent progressive EC (any subtype excluding neuroendocrine tumors, carcinosarcoma, or endometrial sarcoma) following prior therapy. * Participants must have received 1 to 3 prior lines of therapy, and must have progressed radiographically on or after their most recent line of therapy: * Participants must have received prior platinum-based chemotherapy and a programmed death-ligand 1 (PD-\[L\])1 inhibitor. * Participants who progress \>12 months after completion of prior adjuvant or neoadjuvant platinum-based chemotherapy must receive 1 additional cytotoxic systemic treatment prior to enrollment in this study. * Hormonal therapy alone (i.e., without chemotherapy) will not be counted as a separate line of therapy. * Measurable disease per the RECIST Version 1.1 at baseline. Part I: * Participants must have histologically or cytologically confirmed high grade serous or endometrioid epithelial ovarian cancer, fallopian tube cancer and primary peritoneal cancer (excluding clear cell, mucinous, or sarcomatous histology, mixed tumors containing any of the above histologies or low grade/borderline ovarian tumors). * Participants must have platinum sensitive ovarian cancer. * Measurable disease per the RECIST Version 1.1 at baseline. Part J: * Participants must have high grade epithelial ovarian cancer, primary peritoneal cancer, or fallopian tube cancer including serous, endometrioid, and clear cell carcinomas, and excluding mucinous, low grade, and those with a sarcomatous or neuroendocrine element. * Measurable disease per the RECIST Version 1.1 at baseline. Part K: * Participants must have histologically or cytologically confirmed metastatic or unresectable ovarian cancer (must have high grade epithelial ovarian cancer, primary peritoneal cancer, or fallopian tube cancer including serous, endometrioid, and clear cell carcinomas, and excluding mucinous, low grade, and those with a sarcomatous or neuroendocrine element). * Participants must have primary platinum-refractory, platinum-resistant, or platinum-sensitive ovarian cancer. * Measurable disease per the RECIST Version 1.1 at baseline.

Exclusion criteria

* History of (non-infectious) interstitial lung disease (ILD)/pneumonitis that required steroids within the past 2 years, has current ILD/pneumonitis, or where suspected ILD/pneumonitis cannot be ruled out by imaging at screening. * Prior therapy with a topoisomerase 1 inhibitor-based antibody drug conjugate. Note: Other protocol-defined inclusion/exclusion may apply.

Design outcomes

Primary

MeasureTime frameDescription
Parts A, B, and D - Incidence of Treatment-Emergent Adverse Events (TEAEs) [Safety and Tolerability]Through end of treatment, up to approximately 1 year.
Parts A, and D - Dose Limiting Toxicity (DLT)At the end of Cycle 1 (each cycle is 21 days)The proportion of participants experiencing DLT.
Parts C, F, G, H, I, and J- Objective Response Rate (ORR) as Assessed by Blinded Independent Central Review (BICR, Parts C, E, and F) or Investigator (Part G, I, and J) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1Through end of treatment, up to approximately 1 year.Participants who achieve partial response (PR) or complete response (CR) per RECIST v1.1 criteria.
Part K (US Participants Only) - Number of Participants with Clinically Significant Changes in Electrocardiogram (ECG) Findings by HolterCycles 1 to 3 (each cycle is 21 days)

Secondary

MeasureTime frameDescription
Parts A, B, and D - Best Overall Response (BOR)Up to approximately 1 year.Participants who achieve CR or PR. Best response as assessed by the investigator per RECIST v1.1 criteria for all tumor types other than pleural mesothelioma which will use modified RECIST (mRECIST) v1.1.
Parts A, B, and D - ORRUp to approximately 1 year.Participants who achieve PR or CR per RECIST v1.1 criteria.
Parts A, B, and D - Disease Control Rate (DCR)Up to approximately 1 year.Participants who achieve stable disease, PR or CR per RECIST v1.1 criteria.
Parts A, B, C, D, F, G, H, I, and J - Progression-Free Survival (PFS)Through end of treatment, up to approximately 1 year.Time from start of treatment to first documented disease progression or death
Parts C, F, G, H, I and J - Overall survival (OS)Up to approximately 2 years.Time from the start of study treatment to the date of death from any cause
Parts A, B, C, D, F, H, I and J - Duration of Objective Response (DOR)From date of enrollment until the date of first documented disease progression or date of study withdrawal, whichever came first, assessed up to 12 months.Time from the first documentation of an objective tumor response (CR or PR) to the first documented tumor progression or death
Parts A, B, and D - Peak Plasma Concentration (Cmax) for Rina-SThrough end of treatment, up to approximately 1 year.Measurement of maximum plasma concentration after the administration of Rina-S.
Parts A, B, and D - Area Under the Plasma Concentration Versus Time Curve (AUC) for Rina-SThrough end of treatment, up to approximately 1 year.Measurement of AUC after the administration of Rina-S.
Parts A, B, and D -Time to Reach Cmax (Tmax) for Rina-SThrough end of treatment, up to approximately 1 year
Parts A, B, and D - Trough Concentrations (Ctrough) for Rina-SThrough end of treatment, up to approximately 1 year
Parts A, B, and D - Apparent Terminal Half-life (t1/2) for Rina-SThrough end of treatment, up to approximately 1 year
Parts C, D, H and J - CA-125 Response Determined Using the Gynecologic Cancer Intergroup (GCIG) CriteriaThrough end of treatment, up to approximately 1 year
Parts C, F, H, I, J, and K - Number of Participants with Type, Incidence, Severity, Seriousness as per Common Terminology Criteria for Adverse Events (CTCAE) v5.0, and Relatedness of Adverse Events (AEs)Through end of treatment, up to approximately 1 year

Countries

China, Japan, United States

Contacts

CONTACTGenmab Trial Information
clinicaltrials@genmab.com+4570202728
STUDY_DIRECTORStudy Official

Genmab

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 8, 2026